Crash in usbdrv.sys in ehci_rh_submit_urb

R54334. From the log:

<usbdrv.sys:4aa0 (drivers/usb/nt4compat/usbdrv/ehci.c:2966 (ehci_rh_submit_urb))>
Frames:
<usbdrv.sys:9be3 (drivers/usb/nt4compat/usbdrv/ehci.c:708 (ehci_submit_urb))>
<usbdrv.sys:9e3a (drivers/usb/nt4compat/usbdrv/ehci.c:3331 (ehci_submit_urb2))>
<usbdrv.sys:17171 (drivers/usb/nt4compat/usbdrv/usb.c:287 (usb_reset_pipe))>
<usbdrv.sys:1546f (drivers/usb/nt4compat/usbdrv/hub.c:574 (hub_int_completion))>
<usbdrv.sys:517c (drivers/usb/nt4compat/usbdrv/ehci.c:2914 (ehci_generic_urb_completion))>
<usbdrv.sys:114a7 (drivers/usb/nt4compat/usbdrv/roothub.c:308 (rh_timer_svc_int_completion))>
<usbdrv.sys:1c576 (drivers/usb/nt4compat/usbdrv/devmgr.c:451 (dev_mgr_timer_dpc_callback@16))>
[...]

The pendp in the purb is null, perhaps usb_reset_pipe() should initialize it, like "purb->pendp = pendp;"?